Glass surfaces

insomnia_5c322be5d8

I'm just learning Carrara and I'm trying to do a bunch of glass objects with different surface characteristics.
One of the things that has me stumped is creating a piece of clear glass with a rough or frosted edge.

Can anyone help me out with this?

insomnia_5c322be5d8

The photo is a sample of what I'm trying to accomplish not a rendering.

frank0314

The edge would need to be a separate material zone. Then you can adjust the transparency and add a bump